813202420

素因数分解:

$2^2\times 5^1\times {\mathrm{40660121}}^1$

素因数の和:40660130

約数の個数: 12

約数和(自身を含む): 1707725124

約数和(自身を除く): 894522704

約数列:

[1, 2, 4, 5, 10, 20, 40660121, 81320242, 162640484, 203300605, 406601210, 813202420]

約数ペア:

[(1, 813202420), (2, 406601210), (4, 203300605), (5, 162640484), (10, 81320242), (20, 40660121)]